package String_learning;

public class Code12 {
    public static void main(String[] args) {
        //StringBuilder实际上是一个容器，用来装数据的，高效且便捷
        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < 1000000; i++) {
            sb.append("abc");

        }
        System.out.println(sb);
    }
}
